TNS-12542: TNS Address already in use

While starting the Oracle DB 11g listener I am getting the error TNS-12542. Check the below screenshot.

The DB services are running in VM and network setting is applied as NAT. It was working all while until today so I verified the ip address and noticed that it is changed.
So I updated the /etc/hosts file with correct IP address and started the listener without any hiccups :)

Planning to move to other vendor products?????

With time I am getting chafed with Oracle Products and its documentation. Oracle is releasing products at a much faster rate with inadequate documentation and inadequate training programs. It is getting very difficult for programmers to adapt to new versions and implement the customer requirements.

I am planning to learn some other vendor products to shift the Oracle platform.. I can't assure whether I will quit Oracle platform.

So my next objective is to learn Novell Access Manager based on my bandwidth. I shall be writing some posts on my learning often.

Going back to OES 10g version

I am back to 10g versions which is considered as stable version compared to 10g. Working on OAM/OES/OIM 10g stuff...

OES 11g is much simpler than OES 10g and one such case is exporting and importing application specific policies.

There is small write up on exporting application specific policy in OES 10g.

Upgrade plans of OAM 10g to 11g

I presume many people are curious to know about OAM upgrade from 10g to 11g versions. Well, here is the point!!

There is no direct upgrade plan yet because the 11g version is released for OSSO customers extremely. However to upgrade OAM to 11g here are my thoughts:

1. Architecture is totally revamped in 11g. OAM server is a java based application deployed on WebLogic server. However 10g servers are stand-alone. 
2. 10g WebGates are backward compatible with OAM 11g server. 11g WebGates are provided only for OHS server. So if your environment has Apache or IHS servers then you can continue to use 10g Webgates with agent registration.
3. Policy Domains concept is enhanced with sessions. So you can pass on several session attributes in authorization actions. 
4. If there is a custom plug-in to extrapolate concurrent users scenario, then it is just a checkbox enablement in 11g - much easier, is not it!!
5. Any custom authentication plug-ins developed in 10g using C/C++ has to be rebuilt using java tech in 11g.
6. Any Identity XML features used in 10g has NO upgrade or replacement. All the identity features are part of OIM 11g.
7. If there is a password management features used, then execute the features using OIM 11g.
8. If you are using RSA token authentication then it is not certified in 11g - Oracle has plans to release this soon.
9. If you are using Sharepoint integrated with OAM 10g, then Sharepoint 2010 is certified with OAM 11g. Check out this post.
10. EBS is certified with OAM 10g and 11g versions. In 11g, it is access gate version rather than OSSO delegation.

Therefore, to upgrade OAM 10g to 11g, all the needs to be manually created/configured from the scratch.
If your environment has RSA token as main authentication, then it is better to upgrade to 11gR2 directly as OAM 11gR1 is not certified. OAM 11gR2 - RSA integration guide is here.

The latest IAM release 11.1.2 has upgrade plans from 11gR1.
Upgrading OAM 11gR1 (11.1.1.5) is here.
Unlike OIM, there is a direct upgrade plan from OAM 10g to OAM 11gR2, documentation is here.

Upgrading OIM 10g to 11g

Here is the white paper talking about upgrading Oracle Identity Manager 10g to 11g.

The upgrade plan from OIM 10g to 11gR2 made of two parts:

•  Upgrading OIM 10g to OIM 11gR1 (11.1.1.5)
• Upgrading OIM 11gR1 (11.1.1.5) to OIM 11gR2 (11.1.2)

Configuring OID 11g replication

I did a small write up on OID 11g replication concepts here and LDAP based replication setup here.

OIM 11g Configuration error

Oracle releases products oftentimes and hence it is very difficult to know which version to use and what is certified. I am talking about OIM 11gR1 version with WLS, SOA Suite and RCU.

With OIM 11.1.1.5.0 it is certified with WLS 10.3.5, SOA Suite 11.1.1.5.0 and RCU 11.1.1.5. However with products releasing, they won't appear on OTN, instead you have to download from edelivery. Well, it is a problem if we don't have account.

So I downloaded WLS 10.3.6, SOA Suite 11.1.1.6.0 and Oracle IAM Suite 11.1.1.5. I installed Oracle IAM Suite 11.1.1.5 and failed at OIM configuration step. I wrote a detailed post on the error messages and action plan. Well, it is actually version mismatch. Oracle Identity Manager should be upgraded to 11.1.1.5.2 to use WLS 10.3.6, SOA Suite 11.1.1.6.0.